Abstract: Fluid flow control devices and related systems and methods may include a body or housing and a plug at least partially positioned in the body or housing to define a flow path. In a position of the plug, the plug and the body or housing may collectively define a fluid flow path.

Abstract: A filter manifold is provided for processing fluid being provided to a fluid dispenser, featuring a new and unique combination of a mounting bracket, a filter cartridge and an accumulator cartridge. The mounting bracket is configured with porting connections. The filter cartridge may include a filter cartridge porting connection configured to plumb into one of the porting connections on the mounting bracket and also configured to filter the fluid being provided to the fluid dispenser. The accumulator cartridge includes an accumulator cartridge porting connection configured to plumb into another one of the porting connections on the mounting bracket and also configured to receive, accumulate and provide the fluid to the filter cartridge to be filtered before being provided to the fluid dispenser.

Abstract: A permeameter probe, configured for performing hydraulic conductivity measurements of soil, includes a standpipe having a top section, a transitional section, and a bottom section. The transitional section provides a gradual change in diameter between the larger diameter bottom section and the smaller diameter top section. The standpipe also includes a lower lip for forming a pressure fitting between the standpipe and a casing placed in a borehole.

Abstract: Embodiments of the invention provide a control valve assembly and method of fault detection that includes adjusting a valve between an operating position and a fault position in response to various fault conditions. The control valve assembly is adjustable to accommodate fault conditions encountered in a variety of electrochemical deionization systems.

Abstract: An unclogging filter apparatus has an irrigation outlet and a flushing outlet. A filtering element moves between at least an operational position and a flushing position. When the filtering element is in the operational position substantially all of the fluid flowing into the apparatus is directed out the irrigation outlet, while the filtering element is disposed for removing a particle from the fluid flowing into the apparatus. When the filtering element is in the flushing position, the filtering element is disposed for flushing the particle out the flushing outlet.

Abstract: A portable cooking oil filtering system comprises: a cart; a supply tank mounted on the cart; a pump mounted on the cart and configured to deliver cooking oil from a fryer to the supply tank; a centrifuge filter mounted on the cart and in fluid communication with the supply tank, such that the centrifuge filter receives the cooking oil from the supply tank, and then separates waste from the cooking oil; a sludge tank mounted on the cart and configured to receive the waste from the centrifuge filter; and a filtered oil tank mounted on the cart and configured to receive the cooking oil from the centrifuge filter.

Abstract: A head for a water filter system having a filter element including a three-way valve member movable between a first position, a second position, and a third position. When the valve member is in the first position, incoming water is directed to the filter element to remove sediment and impurities from the water. When the valve member is in the second position, the incoming water is blocked from passing through the filter element and the valve member. Lastly, when the valve member is in the third position, the incoming water passes through the valve member and not the filter element so that the filter element can be removed and replaced without interrupting the incoming water flow.

Abstract: A potable water distribution system for use in aircraft, as well as potable water systems of boats, recreational vehicles/caravans, residential homes, dental offices, laboratories, vending machines, and the like, provides for sanitizing of the system without opening filter and/or purification units and removing filtering and/or purifying cartridges from the filter and/or purification units during the sanitizing process.

Abstract: Liquid filter arrangements are described and shown. The arrangements generally include a filter member comprising a shell enclosing a filter cartridge. Unique features for interface between the enclosed filter cartridge and the shell are provided. Also provided are unique features for interaction between the cartridge and a filter head, in use.

Abstract: Embodiments of the invention provide a control valve assembly and method of operating in a blend position at which a supply fluid and a treated fluid are combined into a blended fluid that is directed from the control valve assembly to establish multi-port blending. The control valve assembly is adjustable to accommodate fluctuating demand for treated fluid.

Abstract: A water distribution system including a water storage tank, a water treatment unit, a diverter valve, and interconnecting water conduits arranged so that the same water treatment unit can be used to treat water supplied from a fill port to the storage tank during a fill operation, as well as water leaving the storage tank for supply to one or more points of water use during a supply operation. A diverter valve is provided which is movable between a fill position wherein the water treatment unit is in fluid communication with the fill port and not the point of water use device, and a supply position wherein the water treatment unit is in fluid communication with the at least one point of water use device and not the fill port. When the diverter valve is in the fill position, water supplied to the fill port can thus flow through the diverter valve and to the water treatment unit for treatment then to the storage tank for storage.

Abstract: A filter assembly is provided. Embodiments of the filter assembly allow for the continuous filtering of the frying oil, while the fryer is on-line. The filter assembly may include a dirty chamber, a clean chamber, a pump configured to suck the frying oil through the chambers, and a toggle clamp configured to move the filter assembly between a closed configuration and an opened configuration. In the closed configuration, the filter assembly is configured to seal a filter media portion between the two chambers. The pump is configured to suck oil into the dirty chamber and through the filter media and into the clean chamber in order to filter dirt from the oil. In the opened configuration, the filter assembly is configured to allow the removal of now dirty filter media portion from between the chambers and the insertion of a new clean filter media portion.

Abstract: Liquid filter arrangements are described and shown. The arrangements generally include a filter head, a seal adaptor, and a filter member comprising a shell enclosing a cartridge. Unique features for interface between the filter cartridge and the filter head are provided. Also provided are unique filter head features and cartridge features.

Abstract: A fluid filter is described, which includes a housing having a first end portion defining fluid inlet and fluid outlet areas, a filter media disposed in the housing, having inlet surfaces communicating with the fluid inlet and outlet surfaces communicating with the fluid outlet, and a relief valve assembly for selectively opening a filter bypass connecting the fluid inlet and the fluid outlet. The relief valve assembly has a media plug for anchoring it in the filter media, the media plug having a bypass aperture connecting to the fluid outlet, and a valve element secured to the media plug. The valve element has a valving portion cooperating with the bypass aperture in the media plug for resiliently closing the bypass aperture when an inlet fluid pressure is below a threshold pressure, and for opening the bypass aperture when the inlet fluid pressure is above the threshold pressure.

Abstract: The apparatus of the present invention relates to rotary valves which provide simultaneous interconnection of a plurality of asymmetrically disposed stationary adsorption chambers in fluid communication with an upper stator of the rotary valve having a lower rotor which upon indexing in accordance with a predetermined periodic sequence provides a simulating bed moving process. Further, the apparatus relates to such combinations of adsorbent chambers and rotary valves in a manner which is useful for implementing a simulating moving bed process wherein the continuous contacting of fluids and solids occurs in order to affect a separation or a purification process in a substantially plot area than previous SMB systems using turntable arrangements of adsorbent chambers.

Abstract: A method of starting up a filtration plant for the filtration of a process liquid, after cleaning of the filtration plant, and a filtration plant which is arranged to be able to started up in accordance with this method. A secondary liquid supply unit connected to the post-treatment equipment during the starting up of the plant provides a flow of e.g. sterilized water to the post-treatment equipment, so that this can be held in a condition in which it is ready for operation. Thereafter, the process liquid is led to the filtration equipment, and the flow of liquid from the secondary liquid supply unit to the post-treatment equipment is shut off when a flow of filtered process liquid is obtained, and which thereafter replaces the liquid from the secondary liquid supply unit.

Abstract: A liquid vacuuming and filtering device may include a container having a sealed interior, a vacuum pump connected to the interior, a two-way valve connected to the interior, a flexible hose connected to the valve, a filter positioned within the interior and connected to the valve and a standpipe positioned within the interior and connected to the valve. The pump may be adjusted to a filling configuration, in which the pump evacuates the container interior to a pressure below ambient, causing fluid to be drawn through the hose, valve, and filter, which collects suspended particulates; or to a discharge configuration, in which the pump pressurizes the interior to a pressure above ambient, wherein the valve is adjusted to allow filtered fluid within the container to flow through the standpipe, valve and out through the hose.

Abstract: A filter device has a filter housing (1), at least one filter element (13) received in the filter housing (1) and an inner fluid space (71) limited by a filter medium (17) through which the fluid to be cleaned can flow. The filter medium separates the inner fluid space (71) from an exterior fluid space (11) located in the filter housing (1). The filter housing (1) has a fluid inlet (7) and a fluid outlet for cleaned fluid. A fluid guide device (9) is connected downstream to the fluid inlet (7) and can be optionally retrofitted to form a flow path between the fluid inlet (7) and the exterior fluid space (11) or between the fluid inlet (7) and the inner fluid space (71) disposed in the filter element (13).

Abstract: A liquid vacuuming and filtering device may include a container having an interior sealed from the ambient, a vacuum pump in communication with the interior, a two-way valve connected to the container interior, a flexible hose connected to the valve, a filter positioned within the container interior and connected to the valve and a standpipe positioned within the interior and connected to the valve. The vacuum pump may be adjusted to a filling configuration in which the pump evacuates the container interior to a pressure below ambient, which causes fluid to be drawn through the hose, valve and through the filter, which may collect particulates that contaminate the fluid. Filtered fluid then collects within the container.

Abstract: A filter head, designed to hold at least two filter elements. The filter head having a housing, into which feed channels to, and return channels from, the filter elements are integrated. A rotatable switching drum is provided for selectively opening or closing the channels to control the flow of fluid to the filter elements. The filter head has a cover, which closes off the housing, and a spring element, which produces an axial force which presses one of the sealing surfaces of the switching drum against the cover and the other sealing surface of the switching drum against the housing.

Abstract: A money saving universal fuel recycling machine has a reservoir for receiving fuel from a used fuel filter or other source of used or old fuel. A pumping device selectively moves the fuel from the reservoir through the filtration devices. Each filtration device has a lower portion for collecting water and other waste material for selective removal to a waste receptacle. The filter fuel that can be selectively routed to either a new fuel filter or a recycled fuel container.

Abstract: A faucet mounted water filtration system includes a base defining an inlet and a plurality of outlets. The base at least partially defines a filter compartment configured to house a filter cartridge. A first valve assembly is positioned within the base and defines a first passage and a second passage. A valve stem is movably positioned within the first passage. With the valve stem in a first position, the first passage provides fluid communication between the inlet and a first outlet and with the valve stem in a second position the second passage provides fluid communication between the inlet and the filter compartment. A body is rotatably coupled to the base and includes a first cam configured to urge the valve stem from the first position to the second position as the body rotates with respect to the base.

Abstract: Various embodiments of an end-of faucet filter assembly connectable with a faucet on a standard sink and having a plurality of outlets corresponding with selectable modes of operation are disclosed herein. One mode of operation provides unfiltered, aerated water dispenses from the filter assembly. A second mode of operation provides a pulsing jet spray, while a third mode of operation provides filtered water. One embodiment of the present invention also includes a connection assembly between the end-of-faucet filter and the faucet that utilizes a water-tight radial seal that allows the end-of-faucet filter to swing or rotate back and forth relative to the faucet without impairing the integrity of the seal. Other embodiments of the present invention also include a filter cartridge assembly configured to provide a user with an easy method of removing and installing the cartridge.

Abstract: A self-cleaning assembly comprising an enclosed casing 1 with a movable piston 31 and filters 32,33 therein. The preferred assembly has a casing 1 with a dirty water inlet 5, a first outlet 6 for clean filtered water and a second outlet 7 for the removal of sludge from the casing. The filter assembly is constructed and arranged to provide, in its normal operating mode, a liquid flow path through the filter 32,33 in a first direction between the dirty water inlet 5 and the clean water outlet 6 and, in a cleaning mode, to provide a liquid flow path in a second direction between the dirty water inlet 5 and the sludge outlet 7. In the cleaning mode, the movable member 31 compresses the filters 32,33 during the liquid flow in the second direction and contaminant is released therefrom for removal from the filter assembly via the second outlet 7. In an alternative embodiment, the sludge outlet 7 is omitted and sludge is removed from the casing via the outlet 6.

Abstract: A filter including a first chamber; a second chamber; a piston having a head portion disposed in the first chamber and a rod portion disposed in the second chamber; a third chamber containing a filter medium, having an inlet communicating with the second chamber and an outlet; first and second conduits supplying fluid under pressure to the first and second chambers, respectively; and a valve in the first conduit operable to direct fluid under pressure to opposite sides of the piston head portion to reciprocate the piston and correspondingly eject fluid in the second chamber through the third chamber.

Abstract: Liquid filter arrangements are described and shown. The arrangements generally include a filter head, a seal adaptor, and a filter member comprising a shell enclosing a cartridge. Unique features for interface between the filter cartridge and the filter head are provided. Also provided are unique filter head features and cartridge features.

Abstract: A faucet mounted water filtration system includes a base having an inlet, a water receiving chamber, and at least one outlet. The inlet is configured to be coupled to a faucet. A body is coupled to the base. The body includes a filter compartment configured to house a filter cartridge. A cover is rotatably coupled to the body. A cam is operatively coupled to the cover. A valve operatively engages a surface of the cam. The cam is rotatable to move the valve to open and close a passageway to the filter compartment. A biasing element biases the cover to a default position.

Abstract: A valve for switching over liquid paths, particularly for pressure exchanger installations with tubular pressure exchanger chambers (3) through which an alternating flow occurs, in which a rotatable control element (10, 10.1) having a plurality of flow paths is mounted in a housing (11), which in turn comprises a plurality of connection opening (12, 16, 17, 46) connected to a first pipe system and to an end of at least one pressure exchanger. Another end of the pressure exchanger is connected to a second pipe system through a valve. A motorized drive shaft (50) rotates the control element so as to alternately connect the control element flow paths to openings inside housing (11). Oncoming flow to the control element may come from an axial direction or from a radial direction, and outgoing flow from the control element occurs in the axial direction.

Abstract: The automatic regenerable cold/hot water softener includes a water softening tank having ion exchange resin and a regenerating tank filled with regenerating substance of the ion exchange resin. The water softener controls the mode for receiving raw water and discharging soft water using one switching valve, a direct water mode for discharging raw water itself, a regeneration mode for regenerating ion exchange resin, and a intermittence mode for intermitting the inflow and outflow of the raw water and the soft water. The precise regeneration time is judged according to used amount of the soft water by a temperature sensor and a flow meter for sensing temperature and flux of supply raw water. The regeneration is automatically prosecuted by a control part having a microprocessor. The cold/hot water softener serves a user's convenience in that sudden change of temperature is prevented.

Abstract: A selector valve of a pressure filter for aquariums or ponds comprises a valve body having a main liquid inlet opening (16), a secondary inlet opening (17), an outlet opening (18) and a discharge opening (19), a cursor (20) housed in the valve body (12), having a passage for the liquid (21) and being selectively moveable between a first position, corresponding to the filtration mode of the filter (11), wherein the main liquid inlet opening (16) is placed in fluid communication with the outlet opening (18), and a second position, corresponding to the washing mode, wherein the secondary inlet opening (17) is in fluid communication with the discharge opening (19), and a safety valve (36) included in the cursor (20) to protect the pressure filter in case of superpressure of the liquid.

Abstract: A unique valve assembly for simulated bed moving chromatography employs a combination of pressure compatible sealable materials that permit minimal frictional interaction between moving parts, ensures alignment of parts, and provides a method for conducting SMB countercurrent chromatography on a small scale, in which purity and separation efficiency are enhanced. Machine designs are disclosed which embody the SMB concepts. Finally, a quick disconnect connector and adaptor is provided for mounting chromatographic columns in an SMB device. Demonstration of this system in a fructose-glucose isomer separation with purity-recovery trade-off for this device is also presented.

Abstract: The present invention relates to a process and apparatus for separating blood plasma, having a mixing unit in the form of a first injection having a first connecting tube and a first piston to provide a compartment for a mixture composed of plasma to be separated and the protein-precipitating agent; a separating unit composed of a filtering tube for separating and preserving a solid material after separation. The filtering tube includes a third connecting tube a filter and a third piston, the third connecting tube communicates with the fourth injection tube having a fourth piston for receiving a separated liquid; and a storage unit in the form of a fifth injection tube having a fifth connecting tube, a second connecting valve and a fifth piston.

Abstract: One advantageous embodiment of the invention is a filter device (10) for filtering a fluid and providing three or more substantially continuous directions of flow therethrough. The filter device (10) includes a housing (12) having an entry port (18) and an exit port (20). The housing (12) has a filter medium (22) disposed therein for filtering the fluid that flows along a filtration-flow direction (24a) from the entry port (18) to the exit port (20). The filter medium (22) has a bi-directional valve (28) coupled thereto for selectively directing the fluid along a bypass-flow direction (24b) and a reverse-flow direction (24c) that is generally opposite to said bypass-flow direction (24b). The bypass-flow direction (24b) extends from the entry port (18) to the exit port (20) in bypass of the filter medium (22). Also, the reverse-flow direction (24c) extends from the exit port (20) to the entry port (18).

Abstract: A filter assembly has a housing closed at one end and open at the other end. An annular filter media/core assembly including first and second end caps is disposed in the housing. An end plate having a plurality of first and second inlet openings and an outlet opening is disposed in the open end of the housing. A combination valve, which is retained between the second end cap of the filter media/core assembly and the end plate, has a first anti-drainback portion that cooperates with the first inlet openings in the end plate and a second bypass portion that cooperates with the second inlet openings. One or more slits are provided in a circle in the first anti-drainback portion. The slits are constructed and arranged to cooperate with the first inlet openings to open to allow fluid flow through the first anti-drainback portion in a reverse direction during initial engine fill, and to close and provide a functional seal when the first anti-drainback portion operates normally.

Abstract: A faucet mounted filter device includes a horizontally disposed cylindrical part for housing a replaceable filter cartridge and a horizontally disposed arm part extending radially from the cylindrical part which has a connector on its upper side for releasable connection to a downwardly discharging water faucet. A window is provided in the cylindrical part through which the water filtration capacity gallonage is visible. A built in microprocessor with a counter delivers data to a read-out at the front end of the cylindrical part which displays the gallonage of water filtered by the filter cartridge. A sensor connected to the microprocessor senses flow of filter water and installation and removal of the cartridge causes the counter to start counting and to return to zero, respectively.

Abstract: The present invention relates to a process and apparatus for separating blood plasma, having a mixing unit in the form of a first injection having a first connecting tube and a first piston to provide a compartment for a mixture composed of plasma to be separated and the protein-precipitating agent; a separating unit composed of a filtering tube for separating and preserving a solid material after separation. The filtering tube includes a third connecting tube a filter and a third piston, the third connecting tube communicates with the fourth injection tube having a fourth piston for receiving a separated liquid; and a storage unit in the form of a fifth injection tube having a fifth connecting tube, a second connecting valve and a fifth piston.

Abstract: An inline filter assembly to be used in conjunction with surgical or other procedures, near the patient or chairside in dental operations, that is capable of removing, by filtration, particulate matter from waste-water. The filter assembly is configured to permit easy and rapid changing of filters. The filter assembly also contains a series of stopcocks to permit easy and quick changing of filters while maintaining suction to the patient.

Abstract: An artificial pond having a motor pump unit with a brushless permanent magnet synchronous alternating current motor that is wound for operation on an alternating current voltage not greater than fifteen volts, and a step down transformer that converts 120 volts AC to an AC voltage not greater than 15 volts.

Abstract: A filter assembly for an aquarium has a self-cleaning filter. A fine mesh filter screen is disposed between an inlet and an outlet for filtering solid matter from the water that is pumped from the aquarium, through the filter, and back to the aquarium. When the filter screen is sufficiently loaded, or according to a set schedule, the solid matter is suctioned off the filter screen with a vacuum assembly. For that purpose, the water flow is first diverted, the filter screen is rotated, and the vacuum assembly is turned on. After the screen has been vacuumed, the vacuum assembly is once more turned off and the water flow is redirected to pass through the filter screen.

Abstract: A device for processing liquid with a main body having a valve housing chamber with a main inlet port and a main outlet port along a non-horizontal axis; a liquid inlet processing port and a liquid outlet processing port. The valve housing chamber has a rotatable valve mounted within and moves from a position allowing the liquid to flow from the main inlet port to the main outlet port to a position that directs the flow from the main inlet port to the inlet processing port and directs a flow from the outlet processing port to the main outlet port. The device also has a processing chamber along a vertical axis, receiving the flow from the inlet processing port, processing the liquid, and directing the flow into the outlet processing port.

Abstract: The present invention consists of an apparatus and method for supplying purified water to a faucet or other apparatus for use from a purification loop maintaining water in constant motion. The apparatus allows the user to select and withdraw the amount of water needed in a closely controlled fashion while any unused water remains in the loop where it is continually purified. A control valve with a manually rotatable spool permits the purified water to be adjustably tapped or withdrawn for various end uses.

Abstract: A filter cartridge configured to provide two or more levels of fluid filtration or conditioning from within a single filter cartridge is disclosed, the filter cartridge including a housing that defines an interior cavity and has an inlet portion for receiving fluid into the cavity, a first outlet portion for discharging fluid from the housing, and a second outlet portion for discharging fluid from the housing. The filter cartridge also includes a first stage filter disposed within the interior cavity for conditioning fluid passing therethrough, the first stage filter in fluid communication with the inlet portion and the first outlet portion by way of a first flow path, and a second stage filter disposed within the interior cavity of the housing for conditioning fluid passing therethrough, the second stage filter in fluid communication with the inlet portion and the second outlet portion by way of a second flow path.

Abstract: A water treatment unit is disclosed which can be mounted directly on the faucet or tap of the user's sink and which contains one or more water treatment media and an operating valve which permits the selection of several operating modes including service, spray and stream modes. In the service mode the water is treated by at least one if not all of the various water treatment media contained in the unit housing after which the water is discharged from the valve of the unit for service use, and the service discharge may be adjusted to direct the treated water as desired by the user. The valve of the treatment unit includes a housing, a stationary member, a slide member and a rotatable switch member unit and may also be operated in a backflush mode in which water may be directed in the reverse direction through at least one of the water treatment media to regenerate that media.

Abstract: A method and system for the recuperation of the content of septic tank where the supernatant is returned to the septic tank after the recuperation of the sludge and of the scum is described herein. According to the method of the present invention, a major portion of the supernatant is advantageously recuperated from the top of the septic tank to the bottom thereof, and stored in a first reservoir of the system. The sludge, the remainder of the supernatant and the scum are then recuperated and stored in a second reservoir. The supernatant is filtered, either upon its recuperation or before its return to the septic tank. Finally, the filtered supernatant is returned to the septic tank.

Abstract: A liquid chromatograph mass spectrometer comprises: a pump; a sample injector; a plurality of separation columns, including a first separation column and a second separation column; and mass spectrometer.

Abstract: A switch valve for use in an extracorporeal blood flow circuit comprises a valve housing having a chamber, four openings communicating with the chamber, and a valve member located in the valve chamber. A first opening is to be connected to a patient via an arterial cannula, a second opening is to be connected to a patient via an venous cannula, a third opening is to be connected to a first inlet/oulet of a blood treatment device, and a fourth opening is to be connected to a second inlet/outlet of a blood treatment device. The valve member is movable within the valve housing to fluidly connect the first opening to either the third or the fourth opening and to fluidly connect the second opening to either the third or the fourth opening. The width of the valve member is smaller than a peripheral dimension of the openings.

Abstract: A flow diverting appliance has a flexible valve body to which a number of flow lines are connected. The valve body is deformed to create different flow paths within it. The valve body may be deformed, for example, by pinching it to define press-seals in an enclosed volume inside the valve body. The press seals divide the enclosed volume to form exclusive flow channels which allow communication between some flow lines and permit flow communication between other lines. The invention provides a way of making flow diverters part of a replaceable blood circuit which is fully hermetic and with no dead-end spaces which would allow blood to cagulate.

Abstract: A filtration assembly for filtering polymer fluids at varying flow rates includes at least two filter housing assemblies releasably attached to a filter support or main block. Polymer fluid is delivered to the filter housing assemblies via an inlet passage in the main block, and filtered polymer fluid is transported from the filter housing assemblies to an outlet passage in the main block. One end of each filter housing assembly is attached to the main block and includes an inlet port for receiving polymer fluid from the inlet passage and an outlet port for delivering filtered polymer fluid to the outlet passage. A single valve disposed on the main block selectively alternates fluid flow between the main block and each filter housing assembly.

Abstract: A system and method for reducing the energy consumption of a swimming pool cleaning system is disclosed. The system operates the skimmer for a first predetermined time period inputted into a programmable controller. At the conclusion of this time period, the programmable controller activates an actuator which causes a diverter valve or in-line valve to isolate and selectively operate a suction vacuum for a second predetermined time period. Isolating and selectively operating the suction vacuum from the skimmer allows the centrifugal pump to be driven by a motor in low speed mode to be used all of the time for skimming and cleaning operations, thereby greatly reducing energy consumption.

Abstract: A duplex strainer for straining material includes a housing, housing inlet port through which material enters the housing under pressure for straining and an outlet port through which strained material exits the housing. The housing includes a first strainer chamber having the first and second ports in separate fluid communication with the housing. A second strainer chamber includes third and fourth ports in separate fluid communication with the housing. The first port opposes the third port and the second port opposes the fourth port. A valve control structure includes a first three-way ball valve disposed within the housing for controlling fluid flow between the first port, third port and the housing. A second three-way ball valve is disposed within the housing to control fluid flow between the housing, second port and fourth port.